Transmission Shaft
This part is identified by Honda as the countershaft within the transmission assembly. It is listed separately from the drive shaft, counter gear, final gear, bearings, seals, washers, and transmission case components.
Honda · Genuine OEM Part
Honda part 23421-K97-T01 is a countershaft in the transmission assembly. Honda’s parts catalog identifies it as SHAFT, COUNTER(16T), indicating a shaft designed around a 16-tooth specification. The catalog lists one required countershaft for the assembly. Its exact Honda part number and catalog description help distinguish this shaft from nearby drive shafts, counter gears, final gears, and other transmission components.
This part is identified by Honda as the countershaft within the transmission assembly. It is listed separately from the drive shaft, counter gear, final gear, bearings, seals, washers, and transmission case components.
Honda’s catalog description identifies this countershaft as 16T. That tooth-count designation is part of the component’s identification and should be retained when matching the exact Honda part number.
The Honda part number 23421-K97-T01 identifies this specific countershaft. Ordering by the complete number helps separate it from related transmission shafts and gears with similar catalog descriptions.
Honda places this component in the transmission section of its parts catalog alongside the transmission case, gasket, drive shaft, counter gear, final gear, bearings, oil seal, dust seal, and related fasteners. The countershaft is therefore a dedicated shaft component within the transmission gear train, rather than a complete gear assembly or transmission case component.
| Honda Part Number | 23421-K97-T01 |
|---|---|
| Honda Catalog Description | COUNTERSHAFT (16T) |
| OEM Catalog Description | SHAFT, COUNTER(16T) |
| Part Type | Countershaft |
| Assembly | Transmission |
| Tooth count | 16T |
| Required quantity | 1 |
| Model | Type | Model Years |
|---|---|---|
| ADV150A | Motorcycle | 2021–2023 |
| PCX150 | Motorcycle | 2019–2020 |
| PCX150A ABS | Motorcycle | 2019–2020 |
Model applications as listed in Honda's dealer parts catalog for part number 23421-K97-T01.
Verify the Honda OEM part number for your specific model before ordering.

Compatible motorcycles, ATVs & side-by-sides
Verify your vehicle's model, year and specific configuration before ordering.